Detroit News poll: 3-point race in Michigan

10/31/12 8:03 AM EDT

Obama's lead over Romney has shrunk to just under 3 points, 47.7 percent to 45 percent, with 3.8 percent undecided, according to a new Detroit News/WDIV Local 4 poll of likely voters. Obama's lead was 6.7 points earlier this month and has eroded to within the poll's 4 percentage point margin of error. It's the smallest advantage for the Democratic president during the Michigan campaign.

"Mitt Romney's numbers … are where they would need to be if he hopes to pull off an upset next week," said Richard Czuba of Glengariff Group Inc., which conducted the poll. "But the question is: Is there enough for a final push?"

Obama's lead is within the margin of error, which may reflect the tightening of the race nationally as well as the money Republican super PACs have spent in the state. Romney still has no Michigan trips on his schedule, so -- much like Minnesota and Pennsylvania -- this is a state both sides take seriously enough to spend in, but not seriously enough to visit. At least not yet.